Hello there!

After a recent update I now see a setting under location > Force disable SUPL.
What does this do? It obviously disables SUPL but what are the impacts of this? Will my location still work? If enabled like default it connects to supl.google.com, what does this do?

Thanks for the help guys - and oh thanks for the great experience! Couple of months on graphene now and haven't had a single issue. Amazing work!

    dortlanders

    Don't know much about SUPL other than what the website says about it:

    If your chosen carrier includes the supl APN type in their APN configuration, SUPL will be used to provide A-GNSS in order to greatly improve location lock time for GNSS (GPS, GLONASS, etc.). The fallback SUPL server is supl.google.com if the carrier doesn't choose a specific one. You can remove supl from APN types if you don't want to use this, but it will greatly increase GNSS location lock time if your carrier lacks control plane A-GNSS via the cellular network and fully relies on user plane A-GNSS (SUPL) to provide this instead.

    dortlanders If enabled like default it connects to supl.google.com, what does this do?

    I don't know the answer to this one... However, it looks like they're working on setting up a SUPL proxy so you'd be using something like supl.grapheneos.org by default instead of Google's (source).

        SUPL is used in GNSS Augmentation which basically means it is used to speed up the time it takes to get your location from GPS. It does this by using information obtained over the network. From what I understand, if you disable SUPL completely, it will initially take longer for your device to determine its location.

        SUPL helps to identify the approximate location of the user using information obtained from the network, (most carrier includes supl in the apn settings)so that it can identify to which gps satellite it needs to connect to obtain the exact location of the user, thats why if you disable SUPL it takes a bit more time to obtain the exact location, with the new SUPL proxy hope this is no longer an issue.